<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>警告</title>
</head>
<body>
抱歉，您未获得授权
<button th:href="@{/main.html}" class="btn btn-primary btn-lg active ">返回主界面</button>
</body>
</html>